Latch



(No Model.)

H. ANSHER 8u B. F. SPRANGER.

LATCH.

No. 394,949. Patented Deo. 25, 1888.

@WW1/woo@ L STATES PATENT FFICEa LATCH.

SPECIFICATION forming part of Letters Patent No. 394,949, dated December25, 1888.

Application filed July 6, 188B. Serial No. 279,159. (No model.)

T 0 all whom it may concern:

Be it known that we, HERMAN ANsHER and BRUNO F. SPRANGER, citizens ofthe lUnited States, residing at Aurora, in the county of Kane and Stateof Illinois, have invented a new and useful Improvement in Latches forDoors, of which the following is a speciiication.

The invention relates to improvements in latches for doors, having forits object to pro vide a simple device whereby the door, although heldclosed against the force of the wind and accidental jars, may be openedby a mere pressure, without the inconvenience of turning a knob orlifting a latch; and it consists in a certain novel construction andcombination of devices, fully set forth hereinafter in connection withthe accompanying drawings, wherein- Figure l is a perspective view of adoor provided with the improved latch. Fig. 2 is a side view of thelatch with part of the casing removed. Fig. 3 is a vertical transversesectional view on the line r .fr of Fig. Fig. i is a detail view of thesocket-plate.

I {eferring by letter to the drawings, A designates the face-plate ot'the latch, which is provided at its center with a rectangular opening,C; and 'I designates a case, which is aty the opening therein.

D represents a follower, which is mounted in the case, and is providedwith the forwardly-projecting arms E E, between which is mounted theroller F, the outer side of which out of order, and the operation of thedoor to projects through the opening C in the faceplate. rear side withthe stem G, on which is coiled the spring H, which bears at its frontend against the follower, thereby normally holding the latter extendedforward with the The follower is further provided on its outer side ot'the roller projected beyond the -l face-plate.

I represenisa lever, which is provided with lateral trnnnions i i,mounted in vertical slots J J in the sides of the case, whereby thelever may be moved vertically, and the lower end of the lever isprovided. with the detent K, which is adapted to engage in either of thenotches 7c 71:. The rear end of the spring H bears against the loverbelow t-he trunnions L' i, whereby the detent K is normally held inengagement with one of the said notches.

L represents an aperture in the lever, which is aligned with the stem Gon the follower when the detent K is engaged in the upper notch, 7c; butwhen the detent is engaged in the lower notch the rear end of the stemabuts against the lever and cannot be repressed.

A key-hole, M, is formed in the side of the lock-case near the upper endof the lever, and when the key is inserted and turned it is adapted toengage the said upper end of the lever, and after repressing itsufficiently to disengage the detent K either raise or lower it,according to whether it is desired to open the lock or secure it againstbeing opened.

The latch N comprises the striking-plate O, which is secured to thecasing of the door, and the socket or depression P at the center of thesaid plate, which is adapted to receive the projecting side of theroller F, and therefore it will be seen that when the door is closed theroller will strike the plate O, and thereby repress the follower againstthe strength of the spring H, and when the roller aligns with the socketor depression I) it will be forced out by the said spring and engage ltherewith. A door provided with the improved latch re tached to the rearside of the said plate over y quires no knob or latch, and is preferablyprovided on each side with a simple loop-haiidle, Q, which maybeattached in any suitable manner.

It will be seen that the latch is simple, and cannot therefore bereadily damaged or put which it is attached is simple, as it requires nomanipulation of a knob orsiinilar device. During the day the lever inthe latch is allowed to remain in alignment with the stem of thefollower, whereby the roller may be repressed by pressingI upon thedoor, and at night when it is lesired to secure the door against beingopened the lever is lowered by means of the key to the locked positiondescribed hercinbefore, when the follower cannot be repressed.

The spring. described herein, which operates the follower, may bc madeof any desired strength, and is preferably sufliciently strong torequire a considerable pressure on the door IOO to open it, so that thewind or an accidental 7 jar or pressure will not disengage the lateh.

Having thus deseribed the invention, we claiml. In a lateh, thecombination of the tol" lower provided with a roller on its outer sideand a stem, G, on its inner side, thelongitudi- .nally-movable leverprovided with an aperture adapted to be aligned with the said stem, andthe spring coiled on the stem and bearing at its ends, respectively,against the rear side ol' the follower and the lever, substantially asspecified.

2. In a lateh, the combination, with the Ii'ollower provided with thestem (f-l, of the lever provided with lateral trnnnions mounted in slots.l J in the ease, and having a detent, K, to engage suitable notches, 7ck', the lever hein further provided with an opening, L, to register withthe rear end of the stem G when the detent K is engaged with the notelik, and the spring arranged on the stem and bearing on the leverbetweenits pivot and the detent K, whereby the detent is normally held inengagement with one of. the notehes, substantially as specified.

3. The herein-described lateh, comprising the ease il, the followerVmounted in the ease and provided with the Stein (l and the t'orwardlyprojecting arms E IC, the roller mounted between the said arms, thelever l, having the aperture 'li to reeeive the rear end ot the stem G,and provided. with the lateral trunnions yl' 1', mounted inlongitndiintl slots ,l .l in the sides ot' the ease, the detent I( onthe lower end otf the lever, adapted to engage notehes /f 7." in theease, the said ease being provided with a key-hole, M, to enable a keyto be inserted to repress the upper end oli' the lever to disengage thedetent Vfrom the notches, and the spring (foiled on the stein (l andbearing against the rear side oi? the I 'ollower and the lower arm ofthe lever l, whereby the detent li is normally held in engagement withone of the notches l; 1.1', sul)- stantially as and -for the purposespeeitieifl.

In testimon)v that we Claim the foregoing as our own we have heretoaffixed our signatures in presence oi' two witnesses.

HERMAN ANSI IER. lBRUNO F. SIRANGER. W tnesses:

lliLLLiM MA1-iii n, WILLIAM S. BEAUPRE.

